/* Definitions for code generation pass of GNU compiler.
Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
/* For GET_MODE_BITSIZE, word_mode */
#include "machmode.h"
-/* The default branch cost is 1. */
-#ifndef BRANCH_COST
-#define BRANCH_COST(speed_p, predictable_p) 1
-#endif
-
/* This is the 4th arg to `expand_expr'.
EXPAND_STACK_PARM means we are possibly expanding a call param onto
the stack.
more information. */
#define OK_DEFER_POP (inhibit_defer_pop -= 1)
\f
-/* If a memory-to-memory move would take MOVE_RATIO or more simple
- move-instruction sequences, we will do a movmem or libcall instead. */
-
-#ifndef MOVE_RATIO
-#if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
-#define MOVE_RATIO(speed) 2
-#else
-/* If we are optimizing for space (-Os), cut down the default move ratio. */
-#define MOVE_RATIO(speed) ((speed) ? 15 : 3)
-#endif
-#endif
-
-/* If a clear memory operation would take CLEAR_RATIO or more simple
- move-instruction sequences, we will do a setmem or libcall instead. */
-
-#ifndef CLEAR_RATIO
-#if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
-#define CLEAR_RATIO(speed) 2
-#else
-/* If we are optimizing for space, cut down the default clear ratio. */
-#define CLEAR_RATIO(speed) ((speed) ? 15 :3)
-#endif
-#endif
-
-/* If a memory set (to value other than zero) operation would take
- SET_RATIO or more simple move-instruction sequences, we will do a movmem
- or libcall instead. */
-#ifndef SET_RATIO
-#define SET_RATIO(speed) MOVE_RATIO(speed)
-#endif
-\f
enum direction {none, upward, downward};
/* Structure to record the size of a sequence of arguments
((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \
: expand_normal (ARGS_SIZE_TREE (SIZE)))
-/* Supply a default definition for FUNCTION_ARG_PADDING:
- usually pad upward, but pad short args downward on
- big-endian machines. */
-
-#define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \
- (! BYTES_BIG_ENDIAN \
- ? upward \
- : (((MODE) == BLKmode \
- ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
- && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
- : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
- ? downward : upward))
-
-#ifndef FUNCTION_ARG_PADDING
-#define FUNCTION_ARG_PADDING(MODE, TYPE) \
- DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
-#endif
-
-/* Supply a default definition for FUNCTION_ARG_BOUNDARY. Normally, we let
- FUNCTION_ARG_PADDING, which also pads the length, handle any needed
- alignment. */
-
-#ifndef FUNCTION_ARG_BOUNDARY
-#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) PARM_BOUNDARY
-#endif
-
-/* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
- Normally move_insn, so Pmode stack pointer. */
-
-#ifndef STACK_SAVEAREA_MODE
-#define STACK_SAVEAREA_MODE(LEVEL) Pmode
-#endif
-
-/* Supply a default definition of STACK_SIZE_MODE for
- allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */
-
-#ifndef STACK_SIZE_MODE
-#define STACK_SIZE_MODE word_mode
-#endif
-
-/* Provide default values for the macros controlling stack checking. */
-
-/* The default is neither full builtin stack checking... */
-#ifndef STACK_CHECK_BUILTIN
-#define STACK_CHECK_BUILTIN 0
-#endif
-
-/* ...nor static builtin stack checking. */
-#ifndef STACK_CHECK_STATIC_BUILTIN
-#define STACK_CHECK_STATIC_BUILTIN 0
-#endif
-
-/* The default interval is one page (4096 bytes). */
-#ifndef STACK_CHECK_PROBE_INTERVAL_EXP
-#define STACK_CHECK_PROBE_INTERVAL_EXP 12
-#endif
-
-/* The default is to do a store into the stack. */
-#ifndef STACK_CHECK_PROBE_LOAD
-#define STACK_CHECK_PROBE_LOAD 0
-#endif
-
-/* The default is not to move the stack pointer. */
-#ifndef STACK_CHECK_MOVING_SP
-#define STACK_CHECK_MOVING_SP 0
-#endif
-
-/* This is a kludge to try to capture the discrepancy between the old
- mechanism (generic stack checking) and the new mechanism (static
- builtin stack checking). STACK_CHECK_PROTECT needs to be bumped
- for the latter because part of the protection area is effectively
- included in STACK_CHECK_MAX_FRAME_SIZE for the former. */
-#ifdef STACK_CHECK_PROTECT
-#define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
-#else
-#define STACK_OLD_CHECK_PROTECT \
- (USING_SJLJ_EXCEPTIONS ? 75 * UNITS_PER_WORD : 8 * 1024)
-#endif
-
-/* Minimum amount of stack required to recover from an anticipated stack
- overflow detection. The default value conveys an estimate of the amount
- of stack required to propagate an exception. */
-#ifndef STACK_CHECK_PROTECT
-#define STACK_CHECK_PROTECT \
- (USING_SJLJ_EXCEPTIONS ? 75 * UNITS_PER_WORD : 12 * 1024)
-#endif
-
-/* Make the maximum frame size be the largest we can and still only need
- one probe per function. */
-#ifndef STACK_CHECK_MAX_FRAME_SIZE
-#define STACK_CHECK_MAX_FRAME_SIZE \
- ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
-#endif
-
-/* This is arbitrary, but should be large enough everywhere. */
-#ifndef STACK_CHECK_FIXED_FRAME_SIZE
-#define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
-#endif
-
-/* Provide a reasonable default for the maximum size of an object to
- allocate in the fixed frame. We may need to be able to make this
- controllable by the user at some point. */
-#ifndef STACK_CHECK_MAX_VAR_SIZE
-#define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
-#endif
\f
/* This structure is used to pass around information about exploded
unary, binary and trinary expressions between expand_expr_real_1 and
typedef struct separate_ops
{
enum tree_code code;
+ location_t location;
tree type;
tree op0, op1, op2;
- location_t location;
} *sepops;
\f
/* Functions from optabs.c, commonly used, and without need for the optabs
perform the operation described by CODE and MODE. */
extern int have_insn_for (enum rtx_code, enum machine_mode);
-extern rtx prepare_operand (int, rtx, int, enum machine_mode, enum machine_mode,
- int);
-
/* Emit code to make a call to a constant function or a library call. */
extern void emit_libcall_block (rtx, rtx, rtx, rtx);
rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, enum machine_mode,
rtx, rtx, enum machine_mode, int);
-rtx expand_val_compare_and_swap (rtx, rtx, rtx, rtx);
-rtx expand_bool_compare_and_swap (rtx, rtx, rtx, rtx);
rtx expand_sync_operation (rtx, rtx, enum rtx_code);
rtx expand_sync_fetch_operation (rtx, rtx, enum rtx_code, bool, rtx);
-rtx expand_sync_lock_test_and_set (rtx, rtx, rtx);
+
+rtx expand_atomic_exchange (rtx, rtx, rtx, enum memmodel, bool);
+rtx expand_atomic_load (rtx, rtx, enum memmodel);
+rtx expand_atomic_store (rtx, rtx, enum memmodel, bool);
+rtx expand_atomic_fetch_op (rtx, rtx, rtx, enum rtx_code, enum memmodel,
+ bool);
+void expand_atomic_thread_fence (enum memmodel);
+void expand_atomic_signal_fence (enum memmodel);
+
\f
/* Functions from expmed.c: */
\f
/* Functions from expr.c: */
-/* This is run during target initialization to set up which modes can be
+/* This is run during target initialization to set up which modes can be
used directly in memory and to initialize the block move optab. */
extern void init_expr_target (void);
/* Copy BLKmode object from a set of registers. */
extern rtx copy_blkmode_from_reg (rtx, rtx, tree);
+/* Mark REG as holding a parameter for the next CALL_INSN.
+ Mode is TYPE_MODE of the non-promoted parameter, or VOIDmode. */
+extern void use_reg_mode (rtx *, rtx, enum machine_mode);
+
+extern rtx copy_blkmode_to_reg (enum machine_mode, tree);
+
/* Mark REG as holding a parameter for the next CALL_INSN. */
-extern void use_reg (rtx *, rtx);
+static inline void
+use_reg (rtx *fusage, rtx reg)
+{
+ use_reg_mode (fusage, reg, VOIDmode);
+}
/* Mark NREGS consecutive regs, starting at REGNO, as holding parameters
for the next CALL_INSN. */
rtx set_storage_via_libcall (rtx, rtx, rtx, bool);
/* Expand a setmem pattern; return true if successful. */
-extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int,
+extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int,
unsigned int, HOST_WIDE_INT);
/* Determine whether the LEN bytes can be moved by using several move
extern rtx force_operand (rtx, rtx);
/* Work horses for expand_expr. */
-extern rtx expand_expr_real (tree, rtx, enum machine_mode,
+extern rtx expand_expr_real (tree, rtx, enum machine_mode,
enum expand_modifier, rtx *);
extern rtx expand_expr_real_1 (tree, rtx, enum machine_mode,
enum expand_modifier, rtx *);
extern tree string_constant (tree, tree *);
/* Generate code to evaluate EXP and jump to LABEL if the value is zero. */
-extern void jumpifnot (tree, rtx);
-extern void jumpifnot_1 (enum tree_code, tree, tree, rtx);
+extern void jumpifnot (tree, rtx, int);
+extern void jumpifnot_1 (enum tree_code, tree, tree, rtx, int);
/* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */
-extern void jumpif (tree, rtx);
-extern void jumpif_1 (enum tree_code, tree, tree, rtx);
+extern void jumpif (tree, rtx, int);
+extern void jumpif_1 (enum tree_code, tree, tree, rtx, int);
/* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if
the result is zero, or IF_TRUE_LABEL if the result is one. */
-extern void do_jump (tree, rtx, rtx);
-extern void do_jump_1 (enum tree_code, tree, tree, rtx, rtx);
+extern void do_jump (tree, rtx, rtx, int);
+extern void do_jump_1 (enum tree_code, tree, tree, rtx, rtx, int);
extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int,
- enum machine_mode, rtx, rtx, rtx);
+ enum machine_mode, rtx, rtx, rtx, int);
/* Two different ways of generating switch statements. */
extern int try_casesi (tree, tree, tree, tree, rtx, rtx, rtx);
extern void fixup_tail_calls (void);
#ifdef TREE_CODE
-extern rtx expand_shift (enum tree_code, enum machine_mode, rtx, tree, rtx,
- int);
+extern rtx expand_variable_shift (enum tree_code, enum machine_mode,
+ rtx, tree, rtx, int);
+extern rtx expand_shift (enum tree_code, enum machine_mode, rtx, int, rtx,
+ int);
extern rtx expand_divmod (int, enum tree_code, enum machine_mode, rtx, rtx,
rtx, int);
#endif
/* Add some bytes to the stack. An rtx says how many. */
extern void anti_adjust_stack (rtx);
+/* Add some bytes to the stack while probing it. An rtx says how many. */
+extern void anti_adjust_stack_and_probe (rtx, bool);
+
/* This enum is used for the following two functions. */
enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL};
/* Save the stack pointer at the specified level. */
-extern void emit_stack_save (enum save_level, rtx *, rtx);
+extern void emit_stack_save (enum save_level, rtx *);
/* Restore the stack pointer from a save area of the specified level. */
-extern void emit_stack_restore (enum save_level, rtx, rtx);
+extern void emit_stack_restore (enum save_level, rtx);
/* Invoke emit_stack_save for the nonlocal_goto_save_area. */
extern void update_nonlocal_goto_save_area (void);
-/* Allocate some space on the stack dynamically and return its address. An rtx
- says how many bytes. */
-extern rtx allocate_dynamic_stack_space (rtx, rtx, int);
+/* Allocate some space on the stack dynamically and return its address. */
+extern rtx allocate_dynamic_stack_space (rtx, unsigned, unsigned, bool);
+
+/* Emit one stack probe at ADDRESS, an address within the stack. */
+extern void emit_stack_probe (rtx);
/* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive.
FIRST is a constant and size is a Pmode RTX. These are offsets from
mode_for_extraction (enum extraction_pattern, int);
extern void store_bit_field (rtx, unsigned HOST_WIDE_INT,
- unsigned HOST_WIDE_INT, enum machine_mode, rtx);
+ unsigned HOST_WIDE_INT,
+ unsigned HOST_WIDE_INT,
+ unsigned HOST_WIDE_INT,
+ enum machine_mode, rtx);
extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT,
- unsigned HOST_WIDE_INT, int, rtx,
+ unsigned HOST_WIDE_INT, int, bool, rtx,
enum machine_mode, enum machine_mode);
extern rtx extract_low_bits (enum machine_mode, enum machine_mode, rtx);
extern rtx expand_mult (enum machine_mode, rtx, rtx, rtx, int);
/* Get the personality libfunc for a function decl. */
rtx get_personality_function (tree);
-extern int vector_mode_valid_p (enum machine_mode);
-
#endif /* GCC_EXPR_H */
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